{
  "cveId": "CVE-2026-53162",
  "url": "https://patchblox.com/security/cve/CVE-2026-53162",
  "summary": "CVE-2026-53162 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2026-53162, released June 28, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  memcg: use round-robin victim selection in refil...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  memcg: use round-robin victim selection in refill_stock  Harry Yoo reported that get_random_u32_below() is not safe to call in the nmi context and memcg charge draining can happen in nmi context.  More specifically get_random_u32_below() is neither reentrant- nor NMI-safe: it acquires a per-cpu local_lock via local_lock_irqsave() on the batched_entropy_u32 state.  An NMI that lands on a CPU mid-update of the ChaCha batch state and recurses into the random subsystem would corrupt that state.  The memcg_stock local_trylock prevents re-entry on the percpu stock itself, but cannot protect an unrelated subsystem\u0027s per-cpu lock.  Replace the random pick with a per-cpu round-robin counter stored in memcg_stock_pcp and serialized by the same local_trylock that already guards cached[] and nr_pages[].  No atomics, no random calls, no extra locks needed.",
  "published": "2026-06-25T09:16:33Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00173,
  "epssPercentile": 0.06805,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.18.36-69.134",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.13-1",
      "fix": "DEBIAN-CVE-2026-53162",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53162",
      "released": "2026-06-28T17:47:07Z"
    },
    {
      "platform": "linux",
      "product": "microvm-kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
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      "product": "perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.36-69.134.amzn2023",
      "fix": "ALAS2023-2026-1925",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1925",
      "released": "2026-07-06T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}